The Unit Economics of Marketplaces
Why 'Take Rate' and 'Liquidity' matter more than simple revenue for platform businesses.
· 1 min read
Marketplaces (like Airbnb or Uber) are notoriously hard to build but incredibly defensive once scaled. The math behind them is unique. It's not just about selling a product; it's about matching supply and demand.
Take Rate
This is the percentage of Gross Merchandise Value (GMV) you keep. A 20% take rate is standard for service marketplaces. If you charge too much, users will go off-platform (disintermediation). If you charge too little, you can't cover your CAC.
Liquidity
Liquidity is the probability that a seller matches with a buyer. If I post a job on Upwork and get no proposals, liquidity is low. High liquidity drives the "flywheel effect." You must measure "Time to Fill" or "Match Rate" obsessively.
For early-stage marketplaces, focus on constraining the market (e.g., "Dog walkers in North Seattle") to artificially create high liquidity before expanding.